martin's mother, sabrina fulton, insisted the screams audible on recorded 911 calls are that of her son. also among the documents, the medical examiner's report, which states the teenager was killed by a gunshot to the heart. toxicology tests performed found that martin had thc, the active ingredient of marijuana, in his bloodstream. >> whether or not he smoked a joint a week before it does not matter. this was an unarmed teenager in a place he had every right to be, who was confronted by a man with a nine millimeter gun. >> reporter: pages upon pages upon evidence in a case that has held the nation's attention for months. curt gregory, nooeb news. >>> the fate of john edwards rests in the hands of a jury which begins deliberations today. in closing arguments prosecutors said he broke campaign financial laws to cover up an affair. the defense argued that while edwards' actions may have been morally wrong, they weren't criminal. nbc's jay gray reports from greensboro, north carolina. >> reporter: the final round in the high-stakes high-profile case was an epic legal battle. >> this is li